19. Which compound would show major fragment ions at m/z 73 and 59? (A) OH CH3CH2CHCH2CH3 OH (B) CH3CH2CH2CHCH3 OH (C) CH3CHCHCH3 CH3 (D) OH CH3CCH2CH3 CH3
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- In 1H and 13C NMR spectra, how many signals does the unsaturated ketone (CH3)2CHCH2C (O)CH=CH2 have? Choices: 6H-6C, 5H-6C, 5H-7C, 6H-7CDraw a diastereomer of the following compound. О :0 OH OH 1 A) I only B) Il only C) III only D) I and II E) III and IV НО он до он дон он хо OH OH OH OH II III IVWhich compound gives a molecular ion at m/z = 122: C6H5CH2CH2CH3, C6H5COCH2CH3, or C6H5OCH2CH3?
- Choose the reagent(s) that will accomplish the following transformation: - OH Na2Cr₂O7, H₂SO4 1) CH3MgBr (2 eq), 2) H3O+ 1) LIAIH4, 2) H3O+, 3) CH3MgBr (2 eq), 4) H3O+ 1) LIAIH4, 2) H3O+ 1) TSCI, 2) NaOHWhich compound in each of the following pairs is more basic? (a) CH3CH2NH2 or CH3CH2CONH2 (b) NaOH or CH3NH2 (c) CH3NHCH3 or pyridineProvide a structure that is consistent with the data: molecular formula C6H10. 1H NMR: 2.0 ppm (1H, septet), 1.8 ppm (3H, singlet), 0.9 ppm (6H, doublet) A) B) C) D) E) "i CH3CH2C=CH -CC-CH₂ O A OB OC OD OE CH₂
- iii) ) Calculate and show the unsaturation number for the molecule of periplanone shown below: H igO Periplanone siboanotni outoude on Unsaturation = Нur wolad mworla opemo sng BWOTE gaiau etonioola 11111) How many sterogenic centers are there in periplanone? CH2d) CH3 Joonam OCH₂CH3 H₂O₂ NaOH / CH3OH - H₂O NaOCH₂CH3 (1 eq) 2) BrCH₂CO₂CH₂CH3 3) aq NaOH (4) ag HCI/ heatFor each of the following pairs, predict which substance is more soluble in water. (d) CH3CH2CN or CH3CH2OCH3 (e) CH3CH2OH or CH3CH2CH2OH (f) CH3CH2OCH3 or CH3CH2CO2H
- The compound that exhibits the following spectral data is IR: 1740 cm. 1H NMR: 6 0.9(t, 3H), 1.6(sext, 2H), 2.3(1,2H), 4.6(d, 2H), 5.2(d, 1H), 5.4(d, 1H), 5.9(m, 1H) ppm. El-MS(m/z): 71 (100%) O ОCompound X (molecular formula C10H12O) was treated with NH2NH2, -OH to yield compound Y (molecular formula C10H14). Based on the 1H NMR spectra of X and Y given below, what are the structures of X and Y?What is the structure of the compound with the formula C10H14 and it shows 1H-NMR spectrum: 1.2 ppm (9H singlet) 7.10 ppm (5H multiplet)